$OpenBSD: patch-configure_ac,v 1.4 2011/12/31 08:25:04 ajacoutot Exp $
--- configure.ac.orig	Wed Nov  2 15:58:18 2011
+++ configure.ac	Sat Dec 31 09:15:33 2011
@@ -302,7 +302,7 @@ else
                 \$(top_builddir)/gst-libs/ext/libav/libavutil/libavutil.a"
 
   FFMPEG_SUBDIRS=gst-libs
-  AC_DEFINE(HAVE_AVI_H)
+  AC_DEFINE(HAVE_AVI_H, [], [whether or not avi.h is installed])
   AC_DEFINE([FFMPEG_SOURCE], ["local snapshot"], [Describes where the Libav libraries come from.])
 
   AC_ARG_WITH(ffmpeg-extra-configure, 
